22027771 has 4 divisors (see below), whose sum is σ = 22388944. Its totient is φ = 21666600.

The previous prime is 22027711. The next prime is 22027777. The reversal of 22027771 is 17772022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17772022 = 2 ⋅8886011.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22027771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22027777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180495 + ... + 180616.

It is an arithmetic number, because the mean of its divisors is an integer number (5597236).

Almost surely, 2^22027771 is an apocalyptic number.

22027771 is a deficient number, since it is larger than the sum of its proper divisors (361173).

22027771 is an equidigital number, since it uses as much as digits as its factorization.

22027771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361172.

The product of its (nonzero) digits is 2744, while the sum is 28.

The square root of 22027771 is about 4693.3752247183. The cubic root of 22027771 is about 280.3217856634.

Adding to 22027771 its reverse (17772022), we get a palindrome (39799793).

The spelling of 22027771 in words is "twenty-two million, twenty-seven thousand, seven hundred seventy-one".